Stopwatch Class Help!

package squishgame;
/*
* The stop watch class will allow a program to start and stop a stopwatch as
* well as return the stopwatch as a string, a total ms's, or the hour, min, and
* seconds separately.
*
* The System.currentTimeMillis() returns the number of milliseconds since
*/
public class Stopwatch {
private long myStarttime; // in milliseconds
private long myStoptime;
private boolean isTiming;
public Stopwatch() {
myStarttime = 0;
myStoptime = 0;
isTiming = false;
}
public void Start() {
// starts the clock by getting system time
myStarttime = System.currentTimeMillis();
isTiming = true;
}
public void Stop() {
// stops the clock by getting the system time
if (isTiming) {
myStoptime = System.currentTimeMillis();
isTiming = false;
}
}
public int getHour(){
// returns the hours of the current time (if not timing)
}
public int getMinutes(){
// returns the minutes of the current time (if not timing)
}
public int getSeconds(){
// returns the seconds of the current time (if not timing)
}
public int getMillis(){
// returns the millis of the current time (if not timing)
}
public String toString() {
// returns a string of the time in hours:minutes:seconds.millis
}
}

Hi. so this is actually a continuation from another question of mine[Here](https://www.daniweb.com/programming/software-development/threads/506795/dynamically-add-values-into-datagridview-cell-from-listbox-vb2010) but i was advised to start a new thread as the original question …

I have a 2d matrix with dimension (3, n) called A, I want to calculate the normalization and cross product of two arrays (b,z) (see the code please) for each column (for the first column, then the second one and so on).
the function that I created to find the ...

Write a C program that should create a 10 element array of random integers (0 to 9). The program should total all of the numbers in the odd positions of the array and compare them with the total of the numbers in the even positions of the array and indicate ...